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Cisco Bug: CSCvu70632 - Sha1 algorithm is not supported starting from version 17.1.1 onwards

Last Modified

Jun 26, 2020

Products (1)

Known Affected Releases

Amsterdam-17.1.x Amsterdam-17.2.x

Description (partial)

Symptom:
Starting from versions 17.1.1 sha1 algorithm is not available in the configuration for SSH server.

Sha1 is missing as an option hmac-sha1 hmac-sha1-96

Switch(config)#ip ssh server algorithm mac 

hmac-sha2-256  HMAC-SHA2-256 (digest length = 256 bits, key length = 256
                 bits)
  hmac-sha2-512  HMAC-SHA2-512 (digest length = 512 bits, key length = 512
                 bits)

Conditions:
SHA1 algorithm is not supported or not working.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
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